Hold your two index fingers up, facing each other about 20 centimeters apart, then curl them toward each other as if they were bowing.

¡°Hello¡± to you too, reader.

This is a story about sign language. Or, more specifically, it¡¯s a story about Japanese Sign Language, because trying to say ¡°hello¡± by curling your index fingers in other countries would likely get you nothing but blank looks.